Cable types such as Power Limited Tray Cable (PLTC) must be mounted in cable tray with listed fittings to meet the requirements. Let's break down what you need to know about explosion-proof requirements for cable trays in these environments, keeping it simple and clear. Chemical plants have risks like explosive gases, dusts, or vapors. All the details play an important role in a hazardous location installation. The following pages address the 2014 National Electrical Code® requirements for cable tray systems as well as design. UL and CSA-listed chemical resistant tray cables for use in control systems, machinery, conveyors, control panels, assembly and production lines and processing equipment. Type MC or TC cable was permitted in ladder, ventilated trough, or ventilated channel in a single layer with a space not less than the largest cable diameter between them.
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